Question: Where were Catharine, Duchess of Cambridge and Prince William, Duke of Cambridge married?
Paraphrase: Where were Catharine, Duchess of Cambridge and Prince William, Duke of Cambridge wedded?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q10479 p:P26 ?s . ?s ps:P26 wd:Q36812 . ?s pq:P2842 ?value}